Improvement in book-holders



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` ',HAMILToNsHERM-AN, or'WAvnRLY,PENNSYLVANIA.

Letters` Patent No. 97,710, dotted .December 7, 1869.

' J IMPROVEMENT-IN BooK-HoLDERs.

'he Schedule referred to in these Letters Patent and` making parbof the same.

`To all whom 'it'may concern.- y t Beit known that I, HAMILTON SHERMAN, of Taverly, in the county of Luzerne, and State of Ienn- Sylvania, have invented a newand improved Book- Holder; andl I do lhereby declare that the following is a full, clear, and exact description thereof', which will enable others skilled in the art to make and-use the same, reference being `had to `the, accompanying drawings; forming partei'V this specification.

The object of tlis'invention is to provide a convenient, adjustable book-holder, for holding books in a `convenient positionfor reading.

f .It consists of 'a ltable hinged to astand for adjustment tothe required angular position in front-of the reader, andprovided with means for holding it as required., Also, withaspringclanxp of peculiar vconstruction, all asfhereinafte'r more fnllyspecifed.

"Figure 1 representsafront elevation of-my iniproved book-holder, with a bookthereon. i,

` Figure 2 represents a side View, and

Figure 3 represents areal' view of the same.

`Similar letters of reference indicate corresponding parts.

` A representslthe vertical part of the stand, which I propose to make of two flat plates ofmetal, a l), curved as represented in iig. 3,and joined at or vnear their centres, forming a slot between them, above the junction, for clamping a plate or bar, B, by a set-screw for holding the table in the required position.

d The tops of thesehars a bare so shaped as' to hinge 4the table thereon, as shown at d.

i .D represents thesaid table, at the lower edgeoi which is a plate, E,g to preventthe books from sliding oli', and from which the arms F ofvaclamp are sns-Y pended, by'brackets G and a sliding adjusting-bar, H. 1 represents the clamping-bar or rod, bent into any `suitable form, and connected to the oscillating4 shaft K, journalled in the outer ends of the arms F, and

connected by a rod, L, to a spriug,M,' attached to the` `hack of 'the table, by which theclampis pressed up against the table or an open book thereon. A By means of the adjusting-slide H, the ends ofthe arms to which the clamping-bar is connected are adjusted to or from the lower edge of the table, and the said bar moved up or down! thereon for books having lmargins of greater or less breadth.

"lhe shaft K is -providedwith thumb-pieces N, by which it may he turned easily, to raise the bar I oif the. book, for turning the leaves.

v The bar or shaft K, and -the connecting-'rod L, are so arranged, that when the clampingbar I is drawn back as tar as it will go, the line of draught between the points of connection of the rod L, with the spring M and the shaft, will `fall belowthe'axs of the shaft l' 'K,Vand thereby hold the clamp in the retracted posi- 

